Ok, I already replyed to your other so here&#39;s my thoughts on the changes:

The Grey Seer looks good, strong spell caster but make sure he&#39;s in the middle of your biggest unit. The Engineer is a good choice with the usual setup, but maybe think about a dispel scroll? It&#39;s much better to auto dispel than to roll dice for it.

The core units are good mice size, but as it was suggested change one of the ratling for a Warp Fire Thrower. Also drop the plague ungrade on the swarms, this extra pts could be put to better use.

For example you could then afford 10 more Plague Monks making them 25 and this will allow them to soak up casulties and have a good rank bonus. Also if possible try to get the Banner Of Burning Hatred (although I&#39;m not sure where the pts would come from), this will help your monks in combat.

Skaven magic stinks unless you take a grey seer. I mean, warp lightning isnt a bad spell, but having it as the only spell in your army means no skitter leap, no pestilence, ect. also, do the swarm bases serve a purpose besides no breaking? would you use them as a screen for your jezzails or warp lightning cannon? Also, you took 2 mages for characters, since neither of them have the best leadership you might want to take another hero to keep your rats from fleeing. (but what do i know? i play elves.